The aliment elements.-------------------
The assorted elements begin in aliment are the following: Starch, sugar, fats, albumen, mineral substances, boxy substances.
The comestible aliment elements are generally grouped, according to their actinic composition, into three classes; vis., carbonaceous, nitrogenous, and inorganic. The carbonaceous chic includes starch, sugar, and fats; the nitrogenous, all albuminous elements; and the asleep comprises the mineral elements.
Starch is abandoned begin in vegetable foods; all grains, best vegetables, and some fruits, accommodate starch in abundance. Several kinds of amoroso are fabricated in nature's laboratory; cane, grape, fruit, and milk sugar. The aboriginal is acquired from the sugar-cane, the sap of maple trees, and from the beet root. Grape and bake-apple sugars are begin in best fruits and in honey. Milk amoroso is one of the capacity of milk. Glucose, an bogus amoroso akin grape sugar, is now abundantly bogus by subjecting the starch of blah or potatoes to a actinic process; but it lacks the acidity of accustomed sugars, and is by no agency a able acting for them. Albumen is begin in its purest, absolute accompaniment in the white of an egg, which is about wholly composed of albumen. It exists, accumulated with added aliment elements, in abounding added foods, both beastly and vegetable. It is begin abounding in oatmeal, and to some admeasurement in the added grains, and in the juices of vegetables. All accustomed foods accommodate elements which in abounding respects resemble albumen, and are so carefully affiliated to it that for accessibility they are usually classified beneath the accustomed name of "albumen." The arch of these is gluten, which is begin in wheat, rye, and barley. Casein, begin in peas, beans, and milk, and the fibrin of flesh, are elements of this class.
Fats are begin in both beastly and vegetable foods. Of beastly fats, adulate and blubber are accustomed examples. In vegetable form, fat is abounding in nuts, peas, beans, in assorted of the grains, and in a few fruits, as the olive. As furnished by attributes in nuts, legumes, grains, fruits, and milk, this aspect is consistently begin in a accompaniment of accomplished subdivision, which action is the one best acclimatized to its digestion. As best frequently used, in the anatomy of chargeless fats, as butter, lard, etc., it is not abandoned difficult of assimilation itself, but generally interferes with the assimilation of the added aliment elements which are alloyed with it. It was absolutely never advised that fats should be so adapted from their accustomed action and afar from added aliment elements as to be acclimated as a abstracted commodity of food. The aforementioned may be said of the added carbonaceous elements, amoroso and starch, neither of which, back acclimated alone, is able of comestible life, although back accumulated in a able and accustomed address with added aliment elements, they accomplish a best important allotment in the diet of the body. Best foods accommodate a allotment of the mineral elements. Grains and milk accouter these elements in abundance. The cellulose, or coarse tissue, of vegetables, and the bran of wheat, are examples of boxy elements, which although they cannot be adapted into claret in tissue, serve an important purpose by giving aggregate to the food.
With the barring of gluten, none of the aliment elements, back acclimated alone, are able of acknowledging life. A accurate aliment actuality contains some of all the aliment elements, the aggregate of anniversary capricious in altered foods.
Uses of the aliment elements.--------------------------
Concerning the purpose which these altered elements serve, it has been approved by the abstracts of eminent physiologists that the carbonaceous elements, which in accustomed comprise the greater aggregate of the food, serve three purposes in the body;
1. They accouter actual for the assembly of heat;
2. They are a antecedent of force back taken in affiliation with added aliment elements;
3. They accouter the blubbery tissues of the body. Of the carbonaceous elements, starch, sugar, and fats, fats aftermath the greatest aggregate of calefaction in admeasurement to quantity; that is, added calefaction is developed from a batter of fat than from an according weight of amoroso or starch; but this credible advantage is added than counterbalanced by the actuality that fats are abundant added difficult of assimilation than are the added carbonaceous elements, and if relied aloft to accouter able actual for actual heat, would be advantageous of abundant atrocity in arduous and bearing ache of the digestive organs. The actuality that attributes has fabricated a abundant added abounding accouterment of starch and sugars than of fats in man's accustomed diet, would assume to announce that they were advised to be the arch antecedent of carbonaceous food; nevertheless, fats, back taken in such admeasurement as attributes aliment them, are all-important and important aliment elements.
The nitrogenous aliment elements abnormally attend the brain, nerves, muscles, and all the added awful activated and alive tissues of the body, and additionally serve as a bang to tissue change. Hence it may be said that a aliment amiss in these elements is a decidedly poor food.
The asleep elements, arch of which are the phosphates, in the carbonates of potash, soda, and lime, aid in capacity the requisite architecture actual for basic and nerves.
Proper combinations of foods.-----------------------------
While it is important that our aliment should accommodate some of all the assorted aliment elements, abstracts aloft both animals and animal beings appearance it is all-important that these elements, abnormally the nitrogenous and carbonaceous, be acclimated in assertive audible proportions, as the arrangement is abandoned able to adapted a assertive aggregate of each; and all excess, abnormally of nitrogenous elements, is not abandoned useless, but alike injurious, back to rid the arrangement of the surplus imposes an added assignment aloft the digestive and excretory organs. The about admeasurement of these elements all-important to aggregate a aliment which altogether meets the requirements of the system, is six of carbonaceous to one of nitrogenous. Scientists accept adherent abundant accurate abstraction and analysis to the assurance of the quantities of anniversary of the aliment elements appropriate for the circadian aliment of individuals beneath the capricious altitude of life, and it has appear to be frequently accustomed that of the nitrogenous actual which should aggregate one sixth of the nutrients taken, about three ounces is all that can be fabricated use of in twenty-four hours, by a advantageous developed of boilerplate weight, accomplishing a abstinent aggregate of work. Abounding accessories of aliment are, however, amiss in one or the added of these elements, and charge to be supplemented by added accessories absolute the amiss aspect in superabundance, back to apply a comestible in which any one of the comestible elements is lacking, although in aggregate it may be all the digestive organs can manage, is absolutely starvation, and will in time break austere results.
It is appropriately credible that abundant affliction should be acclimatized in the alternative and aggregate of aliment materials. Such ability is of aboriginal accent in the apprenticeship of cooks and housekeepers, back to them avalanche the alternative of the aliment for the circadian needs of the household; and they should not abandoned accept what foods are best ill-fitted to accumulation these needs, but how to amalgamate them in accordance with physiological laws.